摘要
选取氯虫苯甲酰胺、茚虫威、甲氨基阿维菌素苯甲酸盐等7种药剂,通过单剂施用和混配施用探究这几种农药对玉米田间草地贪夜蛾的防治效果。结果表明:200 g/L氯虫苯甲酰胺SC+150 g/L茚虫威EC、200 g/L氯虫苯甲酰胺SC+5%甲维盐EC这2组混配剂防治草地贪夜蛾有较好的速效性和持效性,药后3 d校正防效分别到达91.94%和89.52%,药后5、7和10 d校正防效均高于95%,可在草地贪夜蛾世代重叠严重及虫口压力大时施用;200 g/L氯虫苯甲酰胺SC、150 g/L茚虫威EC和60 g/L乙基多杀菌素SC这3种药剂高剂量和低剂量对草地贪夜蛾均具有很好的防治效果,药后5 d校正防效均在75%以上,药后10 d校正防效均超过92%,也可作为草地贪夜蛾防治的首选药剂。
This study aims to clarify control effects of seven pesticides,including chlorantraniiprole,indoxacarb and emamectin benzoate,on Spodoptera frugiperda in corn field by single application and mixed application of these pesticides.The results showed that both of mixed insecticides of chlorantraniliprole 200 g/L SC+indoxacarb 150 g/L EC and chlorantraniliprole 200 g/L SC+emamectin benzoate 5%EC had better rapidity and durability for the control of S.frugiperda.Their corrected control effects were 91.94%and 89.52%,respectively after 3 d,and>95%after 5 d,7 d and 10 d.So,those mixed insecticides are recommended when the S.frugiperda has serious generation overlapping or high population density.A high dose or low dose of single application of chlorantraniliprole 200 g/L SC,indoxacarb 150 g/LEC and spinetoram 60 g/L SC also had good control efficacy to S.frugiperda because their corrected control effects were>75%after 5 d,and>92%after 10 d;hence,they can be the first choice for controlling S.frugiperda.
作者
王闯
曾向萍
周文
戴清
姚艳红
王清清
黄蕊
WANG Chuang;ZENG Xiang-ping;ZHOU Wen;DAI Qing;YAO Yan-hong;WANG Qing-qing;HUANG Rui(Changsha Agricultural and Rural Bureau,Changsha 410000,PRC;Institute of Plant Protection,Hainan Academy of Agricultural Sciences,Research Center of Quality Safety and Standards for Agro-Products,Hainan Academy of Agricultural Sciences,Haikou 571100,PRC;Hunan Institute of Agricultural Equipment Research,Changsha 410125,PRC)
出处
《湖南农业科学》
2022年第8期55-57,62,共4页
Hunan Agricultural Sciences
基金
湖南省重点研发计划(2020NK2034)。
关键词
玉米田
草地贪夜蛾
药剂筛选
防治效果
corn field
Spodoptera frugiperda
screening of pesticides
control efficacy
